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Finding the Fourth Proportional to 448,439.64, 618,818.58 and 257,318.52

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Solution

The fourth proportional to 448,439.64, 618,818.58 and 257,318.52 is: 355,083.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,439.64 : 618,818.58 = 257,318.52 : x
  2. Step 2: Convert to fraction form
    448,439.64/618,818.58 = 257,318.52/x
  3. Step 3: Cross multiply
    448,439.64x = 618,818.58 × 257,318.52
  4. Step 4: Simplify right side
    448,439.64x = 159,233,481,154.10
  5. Step 5: Solve for x
    x = 159,233,481,154.10/448,439.64
  6. Step 6: Final answer
    x = 355,083.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.